I have tried to use the ".FERRET" directive in LTspice XVII version (X64): 17.1.9 and I get an error message saying trouble downloading file.
It works in LTspice IV.
Am I missing something or is this a bug?
* 02_sample-tran-ferret.asc
V1 Vout 0 1
.tran 10m
.ferret www.analog.com/media/jp/technical-documentation/data-sheets/j1028fc.pdf
.backanno
.end
For reference see